Spal makes one of the best universal power window kits. This article
outlines how the Spal deluxe power window kit is installed in a Nissan
Titan. Other vehicles and installations will vary a little from this
one, but in general, the installation will be similar.

The
first step in installing a power window kit is to read through the enclosed
instruction sheets. Next, verify that all of the components are in the
box. Spal kits include almost
everything necessary for a successful power window installation. You may,
however, find it necessary to purchase
misc. wiring connectors, electrical tape, solder, etc. from a local auto
parts store.